The goal of Tap Tap Revenge: Nine Inch Nails Edition ($5; iTunes link) is to tap each note as it hits the bottom edge of the game play area. A multiplier kicks in when you're on a roll.

If you score over 150,000 points, you can enter to win an autographed Les Paul guitar and two tickets to any Nine Inch Nails show. You can enter as many times as you manage to score above that level. No funny business: a note on the Tapulous site warns, "We do not tolerate hacking. Any user attempting to submit false scores will be disqualified." The game currently has a five star rating in the Apple App Store.

Challenges include four levels of difficulty, unlockable tracks and a global high score section where the best scores are displayed – just like the game in your local pizza parlor, except it doesn't reset each night when they close.